Or for Aussies who go off letter ring sizes, here's your equivalent to the US ones:

6= M, 7= O, 8= Q.

SaveOurSharks!

This particular ring is named after a very special Tiger Shark named Nikki. If you would like to do more to help sharks and spread awareness about shark finning worldwide please visit Water Inspired or book a trip on One Ocean Diving when visiting Hawaii to see them in their natural habitat. Here is Nikki with Ocean Ramsey and Jerret Lau filmed by Juan Oliphant with GoPro.